151055670721 has 6 divisors (see below), whose sum is σ = 159424406322. Its totient is φ = 143105371920.

The previous prime is 151055670697. The next prime is 151055670737. The reversal of 151055670721 is 127076550151.

It can be written as a sum of positive squares in only one way, i.e., 125698611600 + 25357059121 = 354540^2 + 159239^2 .

It is not a de Polignac number, because 151055670721 - 2⁷ = 151055670593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151055670751) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 209218020 + ... + 209218741.

It is an arithmetic number, because the mean of its divisors is an integer number (26570734387).

Almost surely, 2^151055670721 is an apocalyptic number.

It is an amenable number.

151055670721 is a deficient number, since it is larger than the sum of its proper divisors (8368735601).

151055670721 is an equidigital number, since it uses as much as digits as its factorization.

151055670721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418436799 (or 418436780 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 40.

The spelling of 151055670721 in words is "one hundred fifty-one billion, fifty-five million, six hundred seventy thousand, seven hundred twenty-one".